Door and window lock and door and window device

Abstract

The utility model relates to the technical field of doors and windows, and discloses a door and window lock and a door and window device, in the door and window lock, a spring bolt is in sliding connection with a lock body along a first axis and is provided with an extending station and a containing station, when the spring bolt is located at the extending station, the spring bolt extends out of an external space of the lock body to achieve locking with an external structure, and when the spring bolt is located at the containing station, the spring bolt is locked with the external structure. The spring bolt is contained in the lock body, and locking of the spring bolt and an external structure is relieved. The control handle is rotationally connected with the lock body around the second axis and used for shifting the spring bolt from the extending station to the containing station, the control handle directly shifts the spring bolt, no complex transmission mechanism exists between the control handle and the spring bolt, and therefore the door and window lock is simple and compact in structure and small in occupied space; the elastic reset piece is used for providing elastic reset force for the spring bolt to return to the stretching-out station from the containing station. In addition, the spring bolt and the control handle achieve spatial multiplexing in the longitudinal direction, and the occupied thickness space of the door and window lock is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of doors and windows, and in particular to a door and window lock and a door and window device. Background Art

[0002] The driver's cab of a rail transit train is the driver's working space for operating the train. It usually has an independent door on the side to facilitate the driver to get on and off the train. The door has a sliding window to facilitate the driver to check the surrounding environment of the train when he arrives at the station to ensure the safety of the train and passengers.

[0003] In order to keep the sliding window and the door locked, it is usually necessary to install a door and window lock on the sliding window. However, in the related art, the door and window lock has a complex structure, is not compact and small enough, and is complicated to operate. Utility Model Content

[0004] The utility model discloses a door and window lock and a door and window device, which are used to make the door and window lock structure simple and compact and easy to operate.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] In a first aspect, a door and window lock is provided, which comprises: a lock body, a lock tongue, an elastic reset member and an operating handle; the lock tongue is slidably connected to the lock body along a first axis, and has an extension position and a reception position, which is conducive to the lock tongue to achieve smooth switching between the extension position and the reception position. When the lock tongue is in the extension position, the lock tongue extends out of the external space of the lock body, so as to facilitate the lock tongue to be inserted into the external structure to achieve locking with the external structure; when the lock tongue is in the reception position, the lock tongue is received in the lock body, so that the lock tongue is separated from the external structure and the lock of the lock tongue and the external structure is released; the operating handle is rotatably connected to the lock body around a second axis, and is used to move the lock tongue from the extension position to the reception position, and when unlocking is required. When the lock tongue is retracted from the extended position to the receiving position, it is only necessary to rotate the operating handle around the second axis by a certain angle, which is simple and convenient to operate. In addition, the operating handle directly moves the lock tongue, and there is no complicated transmission mechanism between the two, so that the door and window lock structure is simple and compact. The operating handle rotates around the second axis, and the space required is smaller than that required for moving along a straight line, which is conducive to further realizing the compact structure of the door and window lock. The elastic reset member is used to provide the lock tongue with an elastic reset force to return from the receiving position to the extended position. After the operating handle is released, the elastic reset member automatically returns the lock tongue from the receiving position to the extended position, and in the absence of rotating the operating handle, the lock tongue is always kept in the extended position, so that the lock tongue and the above-mentioned external structure are in a locked state. Wherein, in the longitudinal direction, the projection of the lock tongue and the projection of the operating handle at least partially overlap, and the longitudinal direction is perpendicular to the first axis, so that the lock tongue and the operating handle can realize spatial reuse in the longitudinal direction, and reduce the thickness space occupied by the door and window lock.

[0007] Optionally, the operating handle includes a gripping portion and a toggle portion connected to one end of the gripping portion and bent toward the locking tongue, and the second axis is located at the connection between the gripping portion and the toggle portion; the locking tongue is provided with a blocking structure, and the toggle portion is hooked to the blocking structure.

[0008] Optionally, the second axis is perpendicular to the first axis and is spaced apart along the longitudinal direction; in the direction of the first axis, an end of the gripping portion away from the toggle portion is located on a side of the lock body in an extending direction away from the lock tongue.

[0009] Optionally, a fixed handle is provided at one end of the lock body away from the extending direction of the lock tongue; when the lock tongue is in the extending position, a first angle is formed between the gripping portion and the fixed handle, and when the lock tongue is in the receiving position, a second angle is formed between the gripping portion and the fixed handle, and the first angle is greater than the second angle.

[0010] Optionally, the fixed handle extends in a direction parallel to the first axis, and is located on the same side of the first axis as the second axis; when the locking tongue is in the extending position, the holding portion is located on the side of the fixed handle facing the first axis, and the first angle is an acute angle; when the locking tongue is in the receiving position, the holding portion overlaps the fixed handle.

[0011] Optionally, the lock body has a accommodating space, and a first through hole and a second through hole coaxially and oppositely arranged along the first axis, and the lock tongue slides in the first through hole along the first axis; a lock pin is connected to one end of the lock tongue facing the second through hole, and the lock pin slides in the second through hole along the first axis; when the lock tongue is in the accommodating position, the lock pin extends from one end of the lock tongue away from the lock tongue to a side of the second through hole away from the first through hole.

[0012] Optionally, the accommodating space has an opening facing the second axis direction, and an edge of the opening has a fitting installation surface.

[0013] Optionally, when a fixed handle is provided at one end of the lock body away from the extending direction of the lock tongue, a first solid portion that is in sliding contact with the lock tongue, and a second solid portion that is integrally connected to the root of the fixed handle are provided in the accommodating space; the first solid portion and the second solid portion are respectively penetrated by fasteners.

[0014] Optionally, the blocking structure is a protrusion connected to the circumferential surface of the locking tongue, and the toggle portion is hooked on the protrusion; the protrusion is located in the accommodating space, and along the direction of the first axis, the toggle portion is located between the protrusion and the first through hole.

[0015] Optionally, the first through hole is a non-circular hole, and the outer contour of the locking tongue is matched with the inner contour of the non-circular hole.

[0016] Optionally, a fixing hole is provided at one end of the locking tongue facing the second through hole, one end of the locking pin is slidably fitted in the second through hole, and the other end is interference fit in the fixing hole.

[0017] Optionally, the locking pin includes a first pin shaft and a second pin shaft that are coaxially connected, and the outer diameter of the first pin shaft is larger than the outer diameter of the second pin shaft; the first pin shaft is slidably fitted in the second through hole, and the second pin shaft is interference fit in the fixing hole.

[0018] Optionally, the elastic return member is a compression spring, which is sleeved on the lock pin, with one end of the compression spring abutting against the inner wall of the accommodating space and the other end abutting against the lock tongue.

[0019] In a second aspect, a door and window device is provided, which includes: a door and window frame, a door and window body, and a door and window lock as described in any of the above technical solutions, wherein the lock body is fixedly connected to the door and window body, and the door and window frame has a lock catch; when the door and window body is in a closed state, if the lock tongue is in the extending position, the lock tongue is located in the lock catch, and if the lock tongue is in the receiving position, the lock tongue is disengaged from the lock catch.

[0020] The advantages of the doors and windows described are the same as those of the door and window locks described above relative to the prior art, which will not be described in detail here.

[0021] Optionally, when the accommodating space has an opening facing the direction of the second axis, and an edge of the opening has a fitting installation surface, the opening faces the door and window body, and the fitting installation surface fits against the door and window body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a door and window lock provided in an embodiment of the present application;

[0023] Figure 2 for Figure 1 A perspective view of the door and window lock from another angle;

[0024] Figure 3a express Figure 1 The schematic diagram of the door and window lock when the lock tongue 31 is in the extended position;

[0025] Figure 3b express Figure 1 The schematic diagram of the door and window lock when the lock tongue 31 is in the receiving position;

[0026] Figure 4 express Figure 1 The structural schematic diagram of the lock body 10 in the door and window lock shown;

[0027] Figure 5 express Figure 1 A schematic diagram of the structure of the middle locking tongue 31 and the protrusion T;

[0028] Figure 6 express Figure 1 A schematic structural diagram of the middle locking pin 32;

[0029] Figure 7 A schematic diagram showing a partial structure of a door and window device provided in an embodiment of the present application;

[0030] Figure 8 express Figure 7 A partial transverse cross-sectional view of the door and window device shown. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Combination Figure 1 and Figure 2 The door and window lock 100 provided in the embodiment of the present application comprises: a lock body 10, a lock tongue 31, an elastic reset member 50 and an operating handle 40; the lock tongue 31 is slidably connected to the lock body 10 along the first axis L1, wherein the lock tongue 31 has an extension position and a receiving position, and the form of sliding connection is conducive to the smooth switching of the lock tongue 31 between the extension position and the receiving position; Figure 3a When the lock tongue 31 is in the extended position, the lock tongue 31 extends out of the external space of the lock body 10, so as to facilitate the lock tongue 31 to be inserted into the external structure (such as the embodiment mentioned later). Figure 7 In the lock buckle U in the embodiment, locking with the external structure is achieved. For example, the lock tongue 31 has a first end A and a second end B opposite to each other. When the lock tongue 31 is in the extended position, the first end A extends to the external space of the lock body 10 and enters the lock buckle U, thereby interfering with the lock buckle U and preventing the lock tongue 31 from being unlocked from the lock buckle U, while the second end B is always kept in the lock body 10 (such as in the accommodation space S in the embodiment below); refer to Figure 3b When the lock tongue 31 is in the receiving position, the lock tongue 31 is received in the lock body 10, so that the lock tongue 31 is separated from the external structure, and the lock between the lock tongue 31 and the external structure is released. Specifically, when the lock tongue 31 is in the receiving position, the first end A is retracted from the external space to the position mentioned in the embodiment below. Figure 4The first through hole 32a in the lock body 10 is inserted into the first through hole 32a, thereby disengaging from the lock buckle U and no longer interfering with the lock buckle U, thereby realizing the unlocking of the lock tongue 31 and the lock buckle U; the operating handle 40 is rotatably connected to the lock body 10 around the second axis L2, and is used to move the lock tongue 31 from the extended position to the accommodated position. When the lock tongue 31 is in the extended position, the operating handle 40 is in the locked position, and when the lock tongue 31 is in the accommodated position, the operating handle 40 is in the unlocked position. When the lock tongue 31 needs to be unlocked and the lock tongue 31 is retracted from the extended position to the accommodated position, it is only necessary to rotate the operating handle 40 around the second axis L2 by a certain angle to rotate the operating handle 40 from the locked position to the unlocked position. The operation is simple and convenient, and the operating The handle 40 directly moves the lock tongue 31 without any complicated transmission mechanism therebetween, so that the door and window lock 100 has a simple and compact structure. Moreover, the operating handle 40 rotates around the second axis L2, which occupies less space than moving along a straight line, and is conducive to further realizing the compact structure of the door and window lock 100. The elastic return member 50 is used to provide an elastic return force for the lock tongue 31 to return from the receiving position to the extending position. After the operating handle 40 is released, the elastic return member 50 automatically returns the lock tongue 31 from the receiving position to the extending position, and in the absence of rotating the operating handle 40, the lock tongue 31 is always kept in the extending position, so that the lock tongue 31 and the above-mentioned external structure are in a locked state.

[0033] In the longitudinal direction V, the projection of the lock tongue 31 and the projection of the operating handle 40 at least partially overlap, and the longitudinal direction is perpendicular to the first axis L1. In the longitudinal direction V, the space of the lock tongue 31 and the operating handle 40 is reused, and the space occupied by the two in the thickness of the door and window lock is reduced, which is conducive to thinness.

[0034] Continue to refer Figure 1In a specific embodiment, the operating handle 40 includes a grip portion 41 and a toggle portion 43 connected to one end of the grip portion 41 and bent toward the lock tongue 31. The second axis L2 is located at the connection between the grip portion 41 and the toggle portion 43. An acute angle can be formed between the grip portion 41 and the toggle portion 43, so that the operating handle 40 forms a "√"-shaped structure; the lock tongue 31 is provided with a blocking structure, and the toggle portion 43 is hooked to the above-mentioned blocking structure. Specifically, the toggle portion 43 can be overlapped with the lap surface W facing the grip portion 41 on the lateral surface of the blocking structure to achieve the toggle portion 40. 3. Hooking of blocking structures; Taking the operating handle 40 with the opening facing upward as an example, when the grip 41 is pressed downward at one end away from the toggle portion 43, the grip 41 drives the toggle portion 43 to swing counterclockwise around the second axis L2, and the toggle portion 43 hooks the blocking structure toward the overlap surface W of the grip 41, pushing the lock tongue 31 to be retracted from the extension position to the receiving position. The "√" shape of the operating handle 40 is conducive to the toggle portion 43 hooking the blocking structure of the lock tongue 31, and it is not easy to disengage, wherein the toggle portion 43 can be hooked with the blocking structure only through the end away from the grip 41. In addition, in the "√" structure of the operating handle 40, the toggle portion 43 is bent at a certain angle relative to the grip 41, which is conducive to realizing the compact structure of the operating handle 40.

[0035] Continue to refer Figure 1 In a specific embodiment, the second axis L2 is perpendicular to the first axis L1 and is spaced apart along the longitudinal direction V, so that the toggle portion 43 has a certain swing space to prevent the toggle portion 43 from being stuck in the process of toggle the lock tongue 31, and to prevent the operating handle 40 from interfering with the lock pin 32 and other structures described later; in the direction of the first axis L1, the end of the grip portion 41 away from the toggle portion 43 is located on the side of the lock body 10 away from the extension direction P of the lock tongue 31. For example, Figure 1 In the figure, when the lock tongue 31 is in the extended position, the first end A of the lock tongue 31 is located on the right side of the lock body 10, and the end of the gripping portion 41 away from the toggle portion 43 is located on the left side of the lock body 10, so as to provide sufficient operating space for the operator to rotate the gripping portion 41. When the door and window lock 100 is installed, the lock tongue 31 is generally extended and retracted in the horizontal direction, that is, the first axis L1 extends in the horizontal direction. For the operator such as the driver in the cab, pressing the gripping portion 41 in the vertical direction is a more comfortable and natural operating method.

[0036] In a specific embodiment, a fixed handle 11 is provided at one end of the lock body 10 away from the extension direction P of the lock tongue 31; Figure 3a When the locking tongue 31 is in the extended position, a first angle α is formed between the grip portion 41 and the fixed handle 11, referring to Figure 3bWhen the lock tongue 31 is in the receiving position, a second angle β is formed between the gripping portion 41 and the fixed handle 11, and the first angle α is greater than the second angle β. When the operating handle 40 needs to be rotated from the locking position to the unlocking position, the fixed handle 11 and the gripping portion 41 can be held with one hand at the same time. With the help of the fixed handle 11, the gripping portion 41 is pressed toward the fixed handle 11 to reduce the first angle α between the two to the second angle β. At this time, the lock tongue 31 is slid from the extending position to the receiving position. The door and window lock 100 is similar to the shape of a woodpecker as a whole. When the "wings" (gripping portion 41) are pressed, the "mouth" (lock tongue 31) will retract. The operation is simple and convenient, and the structure is compact. The fixed handle 11 is arc-shaped, ergonomic, and comfortable.

[0037] Combination Figure 1 and Figure 2 In a specific embodiment, the fixed handle 11 extends in a direction parallel to the first axis L1, and the operator's posture of holding the fixed handle 11 is more comfortable. In addition, compared with the situation where the fixed handle 11 tilts upward, it is not easy to slip and fall off; and the fixed handle 11 and the second axis L2 are both located on the same side of the first axis L1. Figure 3a When the lock tongue 31 is in the extended position, the gripping portion 41 is located on the side of the fixed handle 11 facing the first axis L1, and the first angle α is an acute angle, so as to ensure that the distance between the gripping portion 41 and the fixed handle 11 gradually increases in the direction away from the lock body 10, and the gripping portion 41 and the fixed handle 11 form a trumpet-shaped opening with the opening direction away from the lock body 10, which can provide a greater degree of rotation freedom for the gripping portion 41 compared to the case where the gripping portion 41 and the fixed handle 11 form an intersection outside the lock body 10, referring to Figure 3b When the lock tongue 31 is in the receiving position, the gripping portion 41 overlaps the fixed handle 11. At this time, the second angle β is zero. The fixed handle 11 is used to limit the gripping portion 41. The operator can know by feel that the gripping portion 41 has been pressed into place and there is no need to continue pressing.

[0038] Combination Figure 1 , Figure 4 and Figure 5In a specific embodiment, the lock body 10 has a accommodating space S, and a first through hole 31a and a second through hole 32a coaxially and oppositely arranged along the first axis L1. The first through hole 31a and the second through hole 32a respectively connect the accommodating space S with the external space of the lock body 10. The lock tongue 31 is slidably fitted in the first through hole 31a along the first axis L1, and the inner wall of the first through hole 31a is used as a limiting structure for providing a sliding connection for the lock tongue 31. Therefore, when the depth of the first through hole 31a is large, more stable support and limiting can be provided for the lock tongue 31; a coaxial lock pin 32 is connected to one end of the lock tongue 31 facing the second through hole 32a (i.e., the second end B), and the lock pin 32 is slidably fitted in the second through hole 32a along the first axis L1. On the basis of utilizing the inner wall of the first through hole 31 a to support the locking tongue 31 in sliding motion, the inner wall of the second through hole 32 a is further utilized to support the locking pin 32 in sliding motion, so that the locking tongue 31 can slide smoothly along the first axis L1 .

[0039] refer to Figure 3b When the lock tongue 31 is in the receiving position, the end of the lock pin 32 away from the lock tongue 31 extends to the side of the second through hole 32a away from the first through hole 31a, and the lock pin 32 realizes spatial reuse with the fixed handle 11 and the gripping portion 41 without occupying additional space on this side.

[0040] In a specific embodiment, the accommodating space S has an opening that opens in the direction of the second axis L2, and the edge of the opening has a fitting installation surface E. When the lock body 10 is installed, the fitting installation surface E is directly fitted on the door and window body 300 (refer to the description below). The door and window body 300 and the lock body 10 cooperate to form a closed space, and there is no need to set up an additional cover body, which further reduces the space occupied by the door and window lock in the thickness direction, and is conducive to lightweight.

[0041] In a specific embodiment, when a fixed handle 11 is provided at one end of the lock body 10 away from the extending direction of the lock tongue 31, a first solid portion T1 that is in sliding contact with the lock tongue 31 and a second solid portion T2 that is integrally connected to the root of the fixed handle 11 are provided in the accommodating space S. The first solid portion T1 serves as a guide and limiter for the lock tongue 31, and the second solid portion T2 serves as a reinforcement for the root of the fixed handle 11. Fasteners (such as the screws 21 described below) are respectively passed through the first solid portion T1 and the second solid portion T2. ​​Fasteners are provided in the first solid portion T1 and the second solid portion T2, which have greater strength, so as to provide installation stability of the lock body 10.

[0042] Combination Figure 1 and Figure 5In a specific embodiment, the blocking structure is a protrusion T connected to the circumferential surface of the lock tongue 31, and the toggle portion 43 is hooked to the protrusion T. Compared with the case where a slot is provided on the circumferential surface of the lock tongue 31 as a blocking structure, the toggle portion 43 is hooked to the inner wall of the slot, which will not damage the structure of the lock tongue 31, does not require the lock tongue 31 to have a sufficiently large outer diameter as a redundancy for opening the slot, and is not easily stuck by the slot. However, the embodiment of the present application also includes the case where a slot is provided on the circumferential surface of the lock tongue 31 as a blocking structure.

[0043] The protrusion T can be a straight plate-shaped structure connected to the circumferential surface of the second end B of the lock tongue 31. The overlapping surface W of the toggle portion 43 facing the gripping portion 41 can also be a plane. The overlapping surface W is overlapped with the plane on one side of the protrusion T in the extension direction P, so as to realize the hook connection of the toggle portion 43 to the protrusion T. During the rotation of the toggle portion 43 around the second axis L2, the end of the toggle portion 43 away from the gripping portion 41 will slide relative to the protrusion T in a direction perpendicular to the first axis L1. Compared with the protrusion T being in the shape of a hook, the protrusion T adopts a straight plate-shaped structure, and the toggle portion 43 is not easy to be stuck in the hook structure of the protrusion T, but can slide freely up and down relative to the protrusion T. In addition, the process cost of the protrusion T adopting a straight plate-shaped structure is lower than that of the protrusion T adopting a hook-shaped structure. In addition, the protrusion T can be integrally cast with the lock tongue 31, which is conducive to improving the structural stability, thereby increasing the service life of the door and window lock 100. The protrusion T and the lock tongue 31 can be made of brass, and can be galvanized on the surface. When the lock tongue 31 cooperates with the wear-resistant strips on both sides, its wear resistance is good.

[0044] The protrusion T is located in the accommodating space S, and the protrusion T can also prevent the locking tongue 31 from completely escaping from the first through hole 31a. Along the direction of the first axis L1, the pushing portion 43 is located between the protrusion T and the first through hole 31a, and specifically, it can be located between the protrusion T and the inner wall of the accommodating space S located around the first through hole 31a, so as to push the protrusion T away from the first through hole 31a along the first axis L1 to retract the locking tongue 31.

[0045] The accommodation space S may be a groove-shaped structure provided in the lock body 10, the lock body 10 being the outer shell of the door and window lock 100, and the opening direction of the groove-shaped structure is parallel to the second axis L2, with reference to Figure 8 When installing the door and window lock 100, the opening of the groove-shaped structure is directed toward the door and window body 300, and is buckled and fixed on the door and window body 300, so that the opening of the accommodating space S can be shielded.

[0046] Combination Figure 1 , Figure 2 and Figure 4, a threaded hole 42a is provided at the bottom of the accommodation space S, the second axis L2 is the central axis of the threaded hole 42a, and the connection between the gripping portion 41 and the toggle portion 43 is positioned at the position of the threaded hole 42a by the fastener 42, wherein the fastener 42 may be a bolt, the threaded section of the fastener 42 is threadedly connected to the inner wall of the threaded hole 42a, the portion of the fastener 42 corresponding to the operating handle 40 is an optical axis, the operating handle 40 can rotate relative to the optical axis, and a nut is connected to one end of the optical axis away from the threaded section, and the nut is used to prevent the operating handle 40 from falling off. Thus, the fastener 42 is used as a hinge axis to realize the sliding connection between the operating handle 40 and the lock body 10 around the second axis L2.

[0047] The end of the lock body 10 corresponding to the fixed handle 11 is provided with a hollow structure 40a to avoid the grip portion 41 and provide space for the swing of the grip portion 41. The hollow structure 40a can be provided on the side of the fixed handle 11 facing the first axis L1. The lock body 10 and the fixed handle 11 can be integrally cast, specifically, stainless steel can be used for casting, which is conducive to the connection stability between the two, as well as size and cost control.

[0048] Continue to combine Figure 1 , Figure 4 and Figure 5 In a specific embodiment, the first through hole 31a is a non-circular hole, for example, it can be a regular hexagonal hole, a regular octagonal hole, a square hole and a triangular hole, but is not limited to a regular polygon, as long as it is a non-circular hole, the outer contour of the lock tongue 31 is adapted to the inner contour of the non-circular hole. It can be understood that the cross-sectional shape of the lock tongue 31 is the same as the inner contour of the first through hole 31a, for example, both are regular hexagons, and each single surface on the circumferential surface of the lock tongue 31 is the same size as the corresponding single surface of the non-circular hole, is relatively arranged and in sliding contact, and the lock tongue 31 is locked with the inner wall of the first through hole 31a in the circumferential direction, which can prevent the lock tongue 31 from rotating around the first axis L1 during the extension or retraction process, thereby preventing the protrusion T from detaching from the toggle portion 43.

[0049] refer to Figure 3a When the lock tongue 31 is in the extended position, the end of the lock pin 32 away from the lock tongue 31 is retracted into the second through hole 32a. Figure 3b When the lock tongue 31 is in the receiving position, one end of the lock pin 32 away from the lock tongue 31 is exposed to the external space of the lock body 10 through the second through hole 32a.

[0050] The inner contour of the second through hole 32a and the cross-sectional shape of the lock pin 32 can be circular. Since the lock tongue 31 is restricted from rotating, the lock pin 32 will not rotate either. The inner diameter of the second through hole 32a can be slightly larger than the outer diameter of the end of the lock pin 32 away from the lock tongue 31, so that the lock pin 32 can be assembled in the second through hole 32a and can slide smoothly along the first axis L1. In addition, the lock pin 32 with a circular cross-section has a lower cost. However, the inner contour of the second through hole 32a and the cross-sectional shape of the lock pin 32 can also be a matching non-circular shape.

[0051] Among them, the lock pin 32 can be connected to the lock tongue 31, and the two are relatively fixed. Due to the existence of the protrusion T, when assembling the lock tongue 31, it will be placed in the accommodating space S first, and the first end A will be inserted into the first through hole 31a along the extension direction P, and it is difficult to insert a sufficiently long lock tongue through the first through hole 31a and the second through hole 32a in sequence. After the lock tongue 31 is assembled into the accommodating space S, the lock pin 32 is inserted through the second through hole 32a and detachably connected to the lock tongue 31, so that the two can be assembled.

[0052] In some other embodiments, the lock pin 32 has a non-circular cross-section structure, while the lock tongue 31 has a circular cross-section structure, which can also prevent the lock tongue 31 from rotating.

[0053] Combination Figure 1 , Figure 4 and Figure 5 In a specific embodiment, a fixing hole 32b is provided at one end of the lock tongue 31 facing the second through hole 32a, and one end of the lock pin 32 is slidably fitted in the second through hole 32a, and the other end is interference fitted in the fixing hole 32b. The lock pin 32 is interference fitted with the lock tongue 31 through the fixing hole 32b, and the connection is stable, not easy to fall off, and the process is simple. The lock tongue 31 is made of brass and the surface is galvanized, which is conducive to interference fit with the lock pin.

[0054] Also refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 In a specific embodiment, the lock pin 32 includes a first pin shaft 32m and a second pin shaft 32n which are coaxially connected. The outer diameter of the first pin shaft 32m is larger than the outer diameter of the second pin shaft 32n. The first pin shaft 32m is slidably fitted in the second through hole 32a, and the second pin shaft 32n is interference fitted in the fixing hole 32b. The second pin shaft 32n has a larger outer diameter, which is conducive to providing sufficient structural support strength, while the first pin shaft 32m has a smaller outer diameter. When the first pin shaft 32m is interference fitted in the fixing hole 32b, the wall thickness of the lock tongue 31 is avoided to be excessively weakened.

[0055] In a specific embodiment, the elastic reset member is a compression spring 50, which is sleeved on the lock pin 32, and one end of the compression spring 50 abuts against the inner wall of the accommodating space S, and the other end abuts against the lock tongue 31. After the lock pin 32 is inserted through the second through hole 32a, it passes through the compression spring 50, and then is inserted into the fixing hole 32b of the lock tongue 31, and is interference-fitted with it. In addition to being able to achieve stable support for the lock tongue 31, the lock pin 32 also serves as a mounting carrier for the compression spring 50 to prevent the mounting spring from falling off and bending. When the lock tongue 31 is in the extended position, the compression spring 50 releases elastic energy and extends in length. When the lock tongue 31 switches to the receiving position, the lock tongue 31 and the inner wall of the accommodating space S jointly squeeze the above-mentioned compression spring 50, so that the compression spring 50 contracts again, converts the kinetic energy of the lock tongue 31 into the elastic energy release of the compression spring 50, and continues to provide the lock tongue 31 with an elastic reset force to return from the receiving position to the extended position, so that the lock tongue 31 maintains the trend of returning from the receiving position to the extended position.

[0056] The elastic return member can also be a torsion spring sleeved on the fastener 42, one end of the torsion spring is fixed to the operating handle 40, and the other end is fixed to the lock body 10. The torsion spring provides an elastic return force for the operating handle 40 to return from the unlocking position to the locking position, thereby indirectly providing an elastic return force for the lock tongue 31 to return from the receiving position to the extending position.

[0057] Door and window locks are generally divided into two types, namely, a single lock device and a symmetrical lock device. The door and window lock 100 provided in the embodiment of the present application belongs to a symmetrical lock device.

[0058] Based on the same inventive concept, a door and window device is provided, combined with Figure 7 and Figure 8 The door and window device comprises: a door and window frame 200, a door and window body 300 and a door and window lock provided in the above embodiment, wherein the lock body 10 is fixedly connected to the door and window body 300, and the door and window frame 200 has a lock catch U; when the door and window body 300 is in a closed state, if the lock tongue 31 is in the extended position, the lock tongue 31 is located in the lock catch U, and if the lock tongue 31 is in the receiving position, the lock tongue 31 is separated from the lock catch U. Due to the thinning of the door and window lock, the lock catch U can be specifically formed by the locking grooves of the nylon wear-resistant strips on both sides of the door and window body 300, without having to groove the profile of the door and window frame 200. Moreover, the thinning of the door and window lock is conducive to providing an escape space for the sunshade.

[0059] When the door and window lock 100 is applied to the sliding window (door and window body 300) of the driver's cab, when the operating handle 40 is in the unlocking position, the lock tongue 31 is disengaged from the lock buckle U, and the door and window body 300 is unlocked and can move up and down. When the operating handle 40 is released, the lock tongue 31 returns to the extended position and is stuck in the lock buckle U to achieve a fixed effect. At this time, the door and window body 300 is locked and cannot move up and down. The lock tongue 31 can cooperate with the wear-resistant strips on both sides of the door and window body 300 to achieve a stop according to the gear.

[0060] For other beneficial effects of the door and window device, reference can be made to the description of the related effects of the door and window lock 100 in the previous embodiment.

[0061] When the accommodating space S has an opening toward the second axis L2, and the edge of the opening has a fitting installation surface E, the opening faces the door and window body 300, and the fitting installation surface E fits the door and window body 300. The door and window body 300 cooperates with the lock body 10 to form a closed space, and no additional cover body is required, which further reduces the space occupied by the door and window lock in the thickness direction, and is conducive to thinness.

[0062] Also refer to Figure 4 The lock body 10 is provided with at least two mounting holes 21a that penetrate the lock body 10 along the direction of the second axis L2. For example, the lock body 10 is in a rectangular parallelepiped shape, and a mounting hole 21a is provided at each end of the diagonal line of the lock body 10. The door window body 300 is provided with an assembly hole K that corresponds to the mounting hole 21a one by one. The mounting hole 21a is aligned with the corresponding assembly hole K, and the screw 21 passes through the mounting hole 21a and the assembly hole K in sequence. A nut 340 is provided on the side of the door window body 300 away from the lock body 10 and is placed in the assembly hole K. The screw 21 is connected to the corresponding nut 340 through a thread, and the lock body 10 is fixed to the door window body 300 by the screw 21 and the nut 340. The door window body 300 can be made of glass, and a rubber gasket 330 can be provided between the nut 340 and the door window body 300 to prevent the nut 340 from causing damage to the door window body 300. A buffer gasket 310 may also be provided between the lock body 10 and the door window body 300 to prevent the lock body 10 from damaging the door window body 300. The material of the buffer gasket 310 may also be rubber. A shaft sleeve 320 may also be provided in the assembly hole K to form a buffer between the nut 340 and the inner wall of the shaft sleeve 320 to prevent damage to the door window body 300.

[0063] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A door and window lock, characterized in that: include: Lock body, lock tongue, elastic reset member and operating handle; The lock tongue is slidably connected to the lock body along a first axis and has an extension position and a receiving position. When the lock tongue is in the extension position, the lock tongue extends out of the external space of the lock body, and when the lock tongue is in the receiving position, the lock tongue is received in the lock body. The operating handle is rotatably connected to the lock body around a second axis and is used to move the lock tongue from the extending position to the receiving position; The elastic return member is used to provide the lock tongue with an elastic return force to return from the receiving position to the extending position; Wherein, along the longitudinal direction, the projection of the locking tongue at least partially overlaps with the projection of the operating handle, and the longitudinal direction is perpendicular to the first axis.

2. The door and window lock according to claim 1, characterized in that: The operating handle includes a gripping portion and a toggle portion connected to one end of the gripping portion and bent toward the locking tongue, and the second axis is located at the connection between the gripping portion and the toggle portion; The locking tongue is provided with a blocking structure, and the toggling portion is hooked to the blocking structure.

3. The door and window lock according to claim 2, characterized in that: The second axis is perpendicular to the first axis and is spaced apart along the longitudinal direction; In the direction of the first axis, one end of the holding portion away from the toggling portion is located on a side of the lock body in a direction of extending away from the lock tongue.

4. The door and window lock according to claim 3, characterized in that: A fixed handle is provided at one end of the lock body away from the extension direction of the lock tongue; When the locking tongue is in the extending position, a first angle is formed between the gripping portion and the fixed handle, and when the locking tongue is in the receiving position, a second angle is formed between the gripping portion and the fixed handle, and the first angle is greater than the second angle.

5. The door and window lock according to claim 4, characterized in that: The fixed handle extends in a direction parallel to the first axis, and is located on the same side of the first axis as the second axis; When the locking tongue is in the extended position, the gripping portion is located on the side of the fixed handle facing the first axis, and the first angle is an acute angle; When the locking tongue is in the receiving position, the gripping portion overlaps the fixed handle.

6. The door and window lock according to any one of claims 3 to 5, characterized in that: The lock body has a containing space, and a first through hole and a second through hole coaxially and oppositely arranged along the first axis, and the lock tongue is slidably fitted in the first through hole along the first axis; A locking pin is connected to one end of the locking tongue facing the second through hole, and the locking pin is slidably fitted in the second through hole along the first axis; When the locking tongue is in the receiving position, one end of the locking pin away from the locking tongue extends to a side of the second through hole away from the first through hole.

7. The door and window lock according to claim 6, characterized in that: The accommodating space has an opening which opens toward the second axis direction, and an edge of the opening has a fitting installation surface.

8. The door and window lock according to claim 7, characterized in that: When a fixed handle is provided at one end of the lock body away from the extension direction of the lock tongue, a first solid portion that is in sliding contact with the lock tongue and a second solid portion that is integrally connected to the root of the fixed handle are provided in the accommodating space; The first solid portion and the second solid portion are respectively penetrated by fasteners.

9. The door and window lock according to claim 6, characterized in that: The blocking structure is a protrusion connected to the circumferential surface of the locking tongue, and the toggle portion is hooked to the protrusion; The protrusion is located in the accommodating space, and along the direction of the first axis, the shifting portion is located between the protrusion and the first through hole.

10. The door and window lock according to claim 9, characterized in that: The first through hole is a non-circular hole, and the outer contour of the locking tongue is matched with the inner contour of the non-circular hole.

11. The door and window lock according to claim 6, characterized in that: A fixing hole is provided at one end of the locking tongue facing the second through hole, one end of the locking pin is slidably fitted in the second through hole, and the other end is interference fitted in the fixing hole.

12. The door and window lock according to claim 11, characterized in that: The locking pin comprises a first pin shaft and a second pin shaft which are coaxially connected, and the outer diameter of the first pin shaft is greater than the outer diameter of the second pin shaft; The first pin shaft is slidably fitted in the second through hole, and the second pin shaft is interference fitted in the fixing hole.

13. The door and window lock according to claim 6, characterized in that: The elastic return member is a compression spring, which is sleeved on the lock pin, with one end of the compression spring abutting against the inner wall of the accommodating space and the other end abutting against the lock tongue.

14. A door and window device, characterized in that: include: A door and window frame, a door and window body, and a door and window lock according to any one of claims 1 to 13, wherein the lock body is fixedly connected to the door and window body, and the door and window frame has a lock catch; When the door window is in a closed state, if the lock tongue is in the extended position, the lock tongue is located in the lock buckle; if the lock tongue is in the received position, the lock tongue is separated from the lock buckle.

15. The door and window device according to claim 14, characterized in that: When the accommodating space has an opening that opens toward the second axis direction, and an edge of the opening has a fitting installation surface, the opening faces the door and window body, and the fitting installation surface fits against the door and window body.

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